Yamaha F150B Service Manual - Powr
Other manuals for F150B:
Owner's Manual, Service Manual
Manual is about: Outboard Engine
of
458
7-29
Power unit
POWR
Checking the timing belt and
sprocket
1.
Check the interior and exterior of the tim-
ing belt. Replace if cracked, damaged, or
worn.
2.
Check the drive sprocket a and driven
sprockets b. Replace if cracked,
damaged, or worn.
Checking the camshaft
1.
Measure the cam lobe height a and
width b. Replace the camshaft if out of
specification.
2.
Measure the camshaft runout. Replace if
out of specification.
i
i
h
h
a
b
Cam lobe height a:
Intake:
45.300–45.400 mm (1.7835–1.7874 in)
Exhaust:
44.350–44.450 mm (1.7461–1.7500 in)
Cam lobe width b:
Intake and exhaust:
35.950–36.050 mm (1.4154–1.4193 in)
Camshaft runout limit:
0.03 mm (0.0012 in)
a
b